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2014/10/15 ¤U¤È 10:10:04
iphone Programming Glossary: herselecting alternative first view controller from story board at application startup http://stackoverflow.com/questions/10827010/selecting-alternative-first-view-controller-from-story-board-at-application-star story board at application startup I've just started on iOS programming and so far the tutorials and answers I found here have been a great help to move forward. However this particular problem has been bumming me all night and I can't find.. UIApplication application didFinishLaunchingWithOptions NSDictionary launchOptions select my root view controller here based on credentials present or not return YES But this brought up two questions Inside this particular delegate method.. to the story board but how can I access it Update I worked out the second issue I was having as I found my answer here UIStoryboard What's the Correctest Way to Get the Active Storyboard NSBundle bundle NSBundle mainBundle NSString sbFile..
New iOS 7 statusBar leaves a range 20px in apps compiled in Xcode 5 [closed] http://stackoverflow.com/questions/17116315/new-ios-7-statusbar-leaves-a-range-20px-in-apps-compiled-in-xcode-5 and compiled my projects I realized that the new statusBar now is totally calm your view controller will appear as her background. This is where the problem arises a white band of 20px at the bottom of the screen due to the view controller.. I realized that the new statusBar now is totally calm your view controller will appear as her background. This is where the problem arises a white band of 20px at the bottom of the screen due to the view controller have won the space that.. If I fix this problem in my storyboards is all right but then the problem in iOS 6 because of the 20px statusBar there are still there and the screen will be cut off. I thought the simple solution was to check the version of iOS on startup..
In App Purchase (IAP) process appears to be crashing the app on launch for one of my users http://stackoverflow.com/questions/19203921/in-app-purchase-iap-process-appears-to-be-crashing-the-app-on-launch-for-one-o something with the in app purchase process but I haven't been able to diagnose the cause so I thought I would bring it here for every other user I've talked to things seem to be working just fine . Back to the user with the problem she says that.. in app purchase process but I haven't been able to diagnose the cause so I thought I would bring it here for every other user I've talked to things seem to be working just fine . Back to the user with the problem she says that ever since she.. purchase the IAP the app crashes upon launch. And following the crash the device frequently prompts the user to enter her user ID and password as if it's trying to make the purchase again . We've tried reinstalling the app updating to iOS 7 updating..
pathForResource? without using extension (Iphone) http://stackoverflow.com/questions/1984572/pathforresource-without-using-extension-iphone to find the path for my image but without using the extension without using 'ofType' because the name of my image and her extension is store in my database something like that UIImage image UIImage imageWithContentsOfFile NSBundle mainBundle..
How to do a flip animation between more than two UIViews? http://stackoverflow.com/questions/238654/how-to-do-a-flip-animation-between-more-than-two-uiviews be able to do this if I could use self superview to access the index of the currentview and of the nextview. Are there some methods to do this iphone objective c cocoa touch share improve this question Apple have a pretty good tutorial.. iphone objective c cocoa touch share improve this question Apple have a pretty good tutorial on view transitions here . Other than the way they implement them you can also look at using a UINavigationController which manages a bunch of views.. objective c cocoa touch share improve this question Apple have a pretty good tutorial on view transitions here . Other than the way they implement them you can also look at using a UINavigationController which manages a bunch of views and..
How to measure distance between two iphone devices using bluetooth? http://stackoverflow.com/questions/3624945/how-to-measure-distance-between-two-iphone-devices-using-bluetooth I'd like to do something in the following using bluetooth. Measure and display how far my iPhone is from another iPhone. Display direction of my iPhone. For example I'd like to display something in the following on my iPhone application... For example I'd like to display something in the following on my iPhone application. My iPhone is connected to another iPhone Harry's iPhone. In this case Distance 3m 45.3cm Accuracy milimeter Direction North East one of 8 available directions.. of distance between two connected bluetooth devices because it is too much subject to environment condition is there a person between the devices How is the owner holding his her device Is there a wall Are there any RF reflecting surfaces..
Downloading a Large File - iPhone SDK http://stackoverflow.com/questions/4002979/downloading-a-large-file-iphone-sdk a Large File iPhone SDK I am using Erica Sadun's method of Asynchronous Downloads link here for the project file download however her method does not work with files that have a big size 50 mb or above . If I try.. iPhone SDK I am using Erica Sadun's method of Asynchronous Downloads link here for the project file download however her method does not work with files that have a big size 50 mb or above . If I try to download a file above 50 mb it will usually.. a big size 50 mb or above . If I try to download a file above 50 mb it will usually crash due to a memory crash. Is there anyway I can tweak this code so that it works with large files as well Here is the code I have in the DownloadHelper Classes..
logout from Twitter in iPhone using OAuth+MGTwitterEngine Library http://stackoverflow.com/questions/4067837/logout-from-twitter-in-iphone-using-oauthmgtwitterengine-library to make in the Library file for the logout.. iphone twitter logout mgtwitterengine share improve this question There is no sign out from Twitter OAuth xAuth... you need to implement client side solution persistently store the access token.. store the access token in the keychain or coredata it never expires unless the user revoke your application from his her account when log in and use it in subsequent calls to twitter and keeping the user signed in when signing out delete any..
how to pause and resume NSTimer in iphone http://stackoverflow.com/questions/4144242/how-to-pause-and-resume-nstimer-in-iphone and resume NSTimer in iphone hello I am developing small gameApp. I need to pause the timer when user goes to another view say settings view . when user comes back to that view I need to resume the timer. can anybody solve this issue ..... save the fireDate of the timer and also the current date. After this you invalidate the timer and let the user do his her stuff. Once he she switches back to the game you create a new timer object and set the fire date to the old fire date plus..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers pushed onto the UINavigationController stack. That's how the UINavigationController works. That's logical. However there are some stern warnings in the slide about communicating between your UIViewControllers. I'm going to quote from this serious.. into your app delegate and reference the viewcontroller instances in the app delegate methods. Fair 'nuff. A bit further on we get this slide telling us what we should do. Page 18 51 Best Practices for Data Flow Figure out exactly what needs.. interface for observers like delegation This slide is then followed by what appears to be a place holder slide where the lecturer then apparently demonstrates the best practices using an example with the UIImagePickerController. I wish..
TextField Validation With Regular Expression http://stackoverflow.com/questions/5765654/textfield-validation-with-regular-expression Validation With Regular Expression I need help with code that looks at a textfield make sure it starts with either a or then has 3 integers after it. So valid data looks like 234 or 888 So I have started this code but there are 2 problems.. with either a or then has 3 integers after it. So valid data looks like 234 or 888 So I have started this code but there are 2 problems with it It correctly validates that only 4 characters are entered. But for some reason you have to take.. handle user input and feedback. First I'll show a simple way to keep the user in the editing mode of the textField if her input is not valid. First of all two delegate methods BOOL textFieldShouldReturn UITextField aTextField aTextField resignFirstResponder..
iOS Develoment: Why is my NSURLConnection failing with a “bad URL” error for only some users? http://stackoverflow.com/questions/6162653/ios-develoment-why-is-my-nsurlconnection-failing-with-a-bad-url-error-for-onl an iOS app that requests JSON data from my Rails 3 app hosted on Heroku and it works great on my device and for many other users except one. I have one user who has told me that my app fails to retrieve the JSON data so I had her send me some.. for many other users except one. I have one user who has told me that my app fails to retrieve the JSON data so I had her send me some log data and the log showed the NSURLConnection delegate method didFailWithError is being called and the error.. void getTournamentInfoWithUsername NSString username NSString urlString NSString stringWithFormat @ http myapp tourney.heroku.com tournaments next.json username @ username NSURL url NSURL URLWithString urlString NSURLRequest request NSURLRequest..
iOS CVImageBuffer distorted from AVCaptureSessionDataOutput with AVCaptureSessionPresetPhoto http://stackoverflow.com/questions/6540710/ios-cvimagebuffer-distorted-from-avcapturesessiondataoutput-with-avcapturesessio with AVCaptureSessionPresetPhoto At a high level I created an app that lets a user point his or her iPhone camera around and see video frames that have been processed with visual effects. Additionally the user can tap a.. However the video preview as received by the delegate in steps 5 and 6 now looks like this I've confirmed that every other preset High medium low 640x480 and 1280x720 previews as intended. However the Photo preset seems to send buffer data in.. doesn't... and through various means it looks like the buffer is actually in GL_BGRA. Does anyone know what's going on here Or do you have any tips on how I might go about debugging why this is happening What's super weird is that this happens..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample basics and code sample closed As a beginner I'm struggling with iCloud. There are some samples but they are usually quite detailed on the developer forum there is one for iCloud and CoreData which.. I'm struggling with iCloud. There are some samples but they are usually quite detailed on the developer forum there is one for iCloud and CoreData which is massive . The apple docs are OK but I still can't see the big picture. So please.. fundamental but possibly easy to answer. Context I have a very simple iCloud app running full sample code below . There is only one UITextView shown to the user and his her input is saved in a file called text.txt. The txt file is pushed to..
How to list all folders and their subdirectories/files in iPhone SDK? http://stackoverflow.com/questions/7900879/how-to-list-all-folders-and-their-subdirectories-files-in-iphone-sdk to list all folders and their subdirectories files in iPhone SDK I want the user to select any file present in her his iPhone so that it ™s used as an e mail attachment. For this purpose I want to show the list of all files and folders.. I want to show the list of all files and folders present in iPhone. But how would I get the list of those files Is there any way to get that list iphone ios cocoa touch filesystems foundation share improve this question NSArray paths NSSearchPathForDirectoriesInDomains..
String length with given font to fit UITextView http://stackoverflow.com/questions/851856/string-length-with-given-font-to-fit-uitextview will display in the smaller view I want to truncate the text so that it fits with all the truncated text visible. Neither the large UITextView nor the smaller one should scroll. What's the best way to do this I can use a loop shortening the string.. I have available in my smaller UITextView ending the loop when the string will fit but that seems slow and awkward. There must be a better way. I'd like to just tell the destination UITextView to truncate its displayText member as it displays.. a landscape photo the caption is smaller just a line at the bottom of the photo. If she chooses a portrait photo then there's plenty of space I can use for the caption at the side of the photo so the caption is bigger. If the user changes her..
Drawing Smooth Curves - Methods Needed http://stackoverflow.com/questions/8702696/drawing-smooth-curves-methods-needed smooth a set of points in an iOS drawing app WHILE MOVING I have tried UIBezierpaths but all I get are jagged ends where they intersect when I just shift the points 1 2 3 4 2 3 4 5. I have heard of spline curves and all the other types. I am.. ends where they intersect when I just shift the points 1 2 3 4 2 3 4 5. I have heard of spline curves and all the other types. I am quite new to iPhone programming and do not understand how to program it in my quartz drawing app. A solid example.. use a Catmull Rom spline instead of using Bezier splines. These provide a very smooth curve THROUGH a set a points rather then a bezier spline 'around' points. Based on code from Erica Sadun #import UIBezierPath Smoothing.h void getPointsFromBezier..
Load all cells in UITableView before scrolling http://stackoverflow.com/questions/9414746/load-all-cells-in-uitableview-before-scrolling cells sections in total in which 6 of them contain textFields as subviews and out of 2 one containing button and the other containing text view.Now I have got a problem here as we are all aware that when ever the view appears only the visible.. textFields as subviews and out of 2 one containing button and the other containing text view.Now I have got a problem here as we are all aware that when ever the view appears only the visible cells loads.So when my app gets loaded I am able to.. and the 5th cell with button.I can see the array count is 4 when i displayed it through logging in console i.e. there are 4 objects in the array Now after scrolling the table view I can observe the following there are 6 objects in the array..
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